Legume crops use a phosphorus-mobilising strategy to adapt to low plant-available phosphorus in acidic soil in southwest China

Chen, Mei; Luo, Xin; Jiang, Long; Dong, Rui; Siddique, K.H.M.; He, Jin

doi:10.17221/254/2023-pse

Cited by 2 publications

(1 citation statement)

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“…Our results highlight the presence of rhizospheric bacteria with a high solubilization potential, which is attributed to the unique ability of legumes to establish two types of symbiosis: mycorrhizal and rhizobial. Rhizospheric bacteria associated with these plants could meet the demand for phosphorus, as this nutrient plays a crucial role in the symbiotic nitrogen fixation process, thus being essential for their growth and development [ 33 , 34 ]. Furthermore, legumes deploy different morphological and biochemical mechanisms to enhance phosphorus acquisition under acidic soil conditions, thereby increasing their capacity to fix atmospheric nitrogen [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

Rhizospheric Bacteria of Cover Legumes from Acidic Soils Are Capable of Solubilizing Different Inorganic Phosphates

Ríos-Ruiz,

Casique-Huamanguli,

Valdez-Nuñez

et al. 2024

Microorganisms

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Due to its adsorption with aluminum and iron hydroxides, phosphorus viability is low in acidic soils; thus, the aim of this study was to isolate and identify bacteria from the rhizosphere of four legumes growing in acidic soils of the Cumbaza Sub-basin, San Martín, Peru, as well as to characterize their ability to solubilize aluminum phosphate and iron phosphate. The isolation process was conducted on TSA medium and the isolates were classified based on their origin and morphocolonial characteristics, with the bacillary shape being the most frequent, followed by cocci. To assess the solubilization of aluminum and iron phosphates, the liquid medium GELP was employed. Sixteen strains were selected, among which three stood out for their effectiveness in solubilizing AlPO4 (Sfcv-098-02, 22.65 mg L−1; Sfc-093-04, 26.50 mg L−1; and Sfcv-041-01-2, 55.98 mg L−1) and one for its ability to solubilize FePO4 (Sfcr-043-02, 32.61 mg L−1). These four strains were molecularly characterized, being identified as Enterobacter sp., Pseudomonas sp., and Staphylococcus sp. Additionally, a decrease in pH was observed in the reactions, with values ranging from 5.23 to 3.29, which enhanced the phosphate of solubilization. This suggests that the selected bacteria could be used to improve phosphorus availability in agricultural soils.

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Section: Discussionmentioning

confidence: 99%